Method for producing hollow bodies from thermoplastic material and apparatus for carrying out the method
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United States of America Patent
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Sep 19, 2017
Issued Date -
N/A
app pub date -
Mar 14, 2013
filing date -
Mar 27, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a method for producing hollow bodies from thermoplastic material and to an apparatus for carrying out the method. The method comprises the molding of at least two sheet-like preforms in web form of thermoplastic material into two complementary shells in a multi-part tool, which in a closed position forms a mold impression, and the joining together of the shells to form an essentially closed hollow body, the preforms being brought between the parts of the tool in an opened receiving position of the parts of the tool and the preforms being placed into the part-cavities by applying differential pressure and being at least partially molded in them into shells. The shells are joined together to form an essentially closed hollow body by closing the tool to form a closed mold impression. The method is distinguished by the fact that the preforms are molded in the part-cavities while the parts of the tool are located in the opened receiving position.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- B29C Class
- 3653 Applications Filed
- 3211 Patents Issued To-Date
- 87.91 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B29C Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 19, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 19, 2029 |
